Rotary cutter



v (No Model.)

C. G.B. JOH N E. KENISTON.

RY U ER.

Patented Dec. 10, 1895.

UNITD STATES P'IENT FFICE C-IIRISTOPIIER G. B. JHNSON, OF CHELSEA, AND CHARLES E.KENISTON OF SOMERVILLE, MASSACIIUSETTS.

ROTARY CUITERQ SPECIFICATION' foiming part of Letters Patent N'o. 550,978, dated December 1895.

Application filed M 10, 1895. Seria.l N0.548,842. 1Iomddel.)

each provided with an eccentric trunnon D", adapted to be received in the radial notches 6 of the adjustable ring B, as shown. Each of the cutter-blocks D is provided with a longitudinal gioove d, one edge d of which constitutes the cntting-edge during the rotation of the tool in the directon of the arrows shown nthe drawings. The eonfiguratin of'the eutting-edge d may be made of any snitable shape, aceordng to the form of the edge to be eut on the edge of the leather 01 other material.

If it is desired to adjust the position of the cutter-bloeks"D in their bearing-recesses in the bolder A, 2111 that is necessary to do is to loosen the nut C and to turn the slotted ring B around its axis, eausing said slots to turn the eceentric trunnions D to the right 01 1eft, as may be desired, by means of which the eutterbloeks D are caused to be oseil-. lated. After the cutter-bloeks have been thus adjusted they are secnred in plaoeby tight-v "7 5 ening the nut C, which holds them firm1y in in position. By this simple arrangement the rake of the eutting-edge of the cntter-blocks may be adjusted to snit the nature of the vork and the wishes of the operator. More 8'o 01 less elearance of the eutters 11ay also be obtaned by suchadjustnient, and as the cut- .tng-edges are ground oi they may be set up to the required height fr01n time to time.

Havin g thus fu1ly dseribed the nature construotion, and operation of 0111 nvention, we wish to secure byLetters Patent and claim- The herein described rotary cutter, oonsisting of an annular grooved bolder having longitudinal recesses combined with longitudinal 9o grooved cutter blocks journaled in sad recesses, each sueh cutter-bloek havng an eccentrie trunnion .reeeived in a. notched ad justable ring and means for securing s'ad ring and cutter-bloeks 1n their adjusted positions 5 to the holder, substantially as and for the purpose set forth.

In testimony Whereof we have signed our names to this pecificaton, in the presenee of two subscribing W'itnesses, on this 26th day 1eo of Apgel, A. D. 18'.

Be t known that we, CHRISTOPHER G. B. JOHNSON, a resident of Chelsea, in the county of Suffolk, and CHARLES E -KENISTON', a resi- 5 dent of Somerville, in the county of Middiesex, State of Massaehus'etts, eitizens of the United States, have nvented new and useful Improvements in Rotary Cutters, of which the following, taken in conneetion with the ac- 10 eompanying drawings, is a specifi cation.

This invention relates to improvements in rotary cutters especiaily designed for the purpose of trimming edges of boot and shoe soles, Ieather Work, &c. although it may be I 5 equally nsefu1 for the shaping 01 eutting of other materials, as may be desired.

The invention is carried out as follows, reference being had to the accompanying drawings, whereinzo Figu1e 1 represnts an end elevation of the improved rotary cutter. Fig. 2 represents a smilar view showing the fasteningmut as removed. Fig. 3 represents a eross-section on the broken 1ne 3 3 shown in Fig. 1. Fg. 4rep- 2 5 resents a cross-section on the line 4 4 shown in Fig. 3. Fig. 5 represents a rear view of the improved cutter, and Fig. 6 representsa detail side elevation of one of the adjnstable eutter-blocks 0 Similar lettersrefer to similar parts wherever they occur on the diierent parts of the drawings.

In the drawings, A represents the cylindrical cutter-bolder, adaptedt be secured to a rotary shaft in any suitable 01 well-known mannen Said cutter-holder has on its periphery an annular groove A, an annular 1ip A, and an annular tapering upper guide A as shwn in the drawings. The bolder Ahas 0 made in one pece With its forwardend'anannular sleee A on Which'isloosely journaled a ring B, provided with radia1 slots b b, as shown in Fig. 2. The outr end of the an nular s1eeve A is serew-thr'eaded and on it is 5 screwed the adjustable elamping-nut C, as

shownin Figs. 1 and 3.

Through the bolder A are made cyh'ndrcal reeesses a a, adapted to receive the oscillat- 1'ng eutter-blocks D D, provided wth concen 5 o trio trunnions D in their rear ends, journaled in corresponding recesses a a in the annular upper gui ie A as shown.

The front ends of the cutter-blooks D are CRISTOPHER G. B. JOHNSON. CHARLES E. KENIS'ION. Wtnesses:

ALBAN ANDRN, LAURITZ N MLLER. 

